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CEGL000794 Pinus edulis / Rockland Woodland
Type Concept Sentence: No Data Available
Common (Translated Scientific) Name: Two-needle Pinyon / Rockland Woodland
Colloquial Name: No Data Available
Hierarchy Level: Association
Type Concept: This pinyon pine woodland association occurs in Arizona, Colorado and New Mexico. This description is based on information from Great Sand Dunes National Park and Preserve in Colorado. Additional global information will be added as it becomes available. This woodland is known from colluvial slopes and ridges between 2765 and 2885 m in elevation. Bedrock outcrops are typically present with 20-40% ground cover. Combined with large rocks and gravel, they make up at least 50% of the ground cover. Bare soil can also be prevalent, leaving litter to cover between 10-25% of the ground surface. Slopes range from 40° on steep colluvial slopes to 12° on rocky ridgetops. Substrates tend to be loose and actively eroding. Soils are rapidly to well-drained loamy sand. Pinus edulis forms an open to moderately dense canopy with 10-50% cover. The understory is generally sparse, with no stratum exceeding 10% cover. Cercocarpus montanus may be present, but does not form a shrub layer. Characteristic species include Juniperus scopulorum, Ribes cereum, Bouteloua gracilis, Muhlenbergia montana, Opuntia polyacantha, and Heterotheca villosa.
Diagnostic Characteristics: Pinus edulis trees growing on rock with very little soil.
Rationale for Nominal Species or Physiognomic Features: No Data Available
Classification Comments: No Data Available
Similar NVC Types: No Data Available
note: No Data Available
Physiognomy and Structure: No Data Available
Floristics: No Data Available
Dynamics: No Data Available
Environmental Description: This association occurs on lava flows (malpais) or soils that are less than 10 cm (4 inches) to bedrock.
Geographic Range: This woodland association occurs in Arizona, Colorado and New Mexico. It is found in scattered locations throughout New Mexico and Arizona, including the malpais area near the Zuni Mountains, New Mexico, and the Peloncillo Mountains of southwestern New Mexico.
Nations: US
States/Provinces: AZ, CO, NM
Plot Analysis Summary:
http://vegbank.org/natureserve/ELEMENT_GLOBAL.2.689227
Confidence Level: Low
Confidence Level Comments: No Data Available
Grank: G5
Greasons: No Data Available
| Type | Name | Database Code | Classification Code |
|---|---|---|---|
| Class | 1 Forest & Woodland Class | C01 | 1 |
| Subclass | 1.B Temperate & Boreal Forest & Woodland Subclass | S15 | 1.B |
| Formation | 1.B.2 Cool Temperate Forest & Woodland Formation | F008 | 1.B.2 |
| Division | 1.B.2.Nc Western North American Pinyon - Juniper Woodland & Scrub Division | D010 | 1.B.2.Nc |
| Macrogroup | 1.B.2.Nc.2 Two-needle Pinyon - One-seed Juniper Southern Rocky Mountain Woodland Macrogroup | M897 | 1.B.2.Nc.2 |
| Group | 1.B.2.Nc.2.c Two-needle Pinyon - One-seed Juniper - Rocky Mountain Juniper Woodland Group | G253 | 1.B.2.Nc.2.c |
| Alliance | A3576 Two-needle Pinyon - One-seed Juniper Shrubby Woodland Alliance | A3576 | 1.B.2.Nc.2.c |
| Association | CEGL000794 Two-needle Pinyon / Rockland Woodland | CEGL000794 | 1.B.2.Nc.2.c |
Concept Lineage: No Data Available
Predecessors: No Data Available
Obsolete Names: No Data Available
Obsolete Parents: No Data Available
Synonomy: >< Pinus edulis - Juniperus monosperma - Quercus turbinella - Cercocarpus intricatus Association (Warren et al. 1982)
= Pinus edulis / Rockland Habitat Type (Larson and Moir 1987)
= Pinus edulis / Rockland PA (Muldavin et al. 1994a)
= Pinus edulis / rockland (Stuever and Hayden 1997b)
= Pinus edulis / Rockland Habitat Type (Larson and Moir 1987)
= Pinus edulis / Rockland PA (Muldavin et al. 1994a)
= Pinus edulis / rockland (Stuever and Hayden 1997b)
- Bourgeron, P. S., and L. D. Engelking, editors. 1994. A preliminary vegetation classification of the western United States. Unpublished report. The Nature Conservancy, Western Heritage Task Force, Boulder, CO. 175 pp. plus appendix.
- Larson, M., and W. H. Moir. 1987. Forest and woodland habitat types of northern New Mexico and northern Arizona. Edition 2. USDA Forest Service, Southwestern Region, Albuquerque, NM.
- Muldavin, E., P. Mehlhop, and E. DeBruin. 1994a. A survey of sensitive species and vegetation communities in the Organ Mountains of Fort Bliss. Volume III: Vegetation communities. Report prepared for Fort Bliss, Texas, by New Mexico Natural Heritage Program, Albuquerque.
- Salas, D. E., J. Stevens, K. Schulz, M. Artmann, B. Friesen, S. Blauer, E. W. Schweiger, and A. Valdez. 2010b. Vegetation classification and mapping project report: Great Sand Dunes National Park and Preserve. Natural Resource Report NPS/ROMN/NRR--2010/179. National Park Service, Fort Collins, CO.
- Stuever, M. C., and J. S. Hayden. 1997b. Plant associations of Arizona and New Mexico. Volume 2: Woodlands. USDA Forest Service, Southwestern Region, Habitat Typing Guides. 196 pp.
- USFS [U.S. Forest Service]. 1986. Forest and woodland habitat types (plant associations) of southern New Mexico and central Arizona (north of the Mogollon Rim). USDA Forest Service, Southwestern Region, Albuquerque, NM. Second edition, 140 pp. plus insert.
- USFS [U.S. Forest Service]. 1987a. Forest and woodland habitat types (plant associations) of northern New Mexico and northern Arizona. USDA Forest Service, Southwestern Region, Albuquerque, NM. Second edition, 170 pp. plus insert.
- Warren, P. L., K. L. Reichhardt, D. A. Mouat, B. T. Brown, and R. R. Johnson. 1982. Vegetation of Grand Canyon National Park. Cooperative National Park Resources Studies Unit Technical Report 9. Tucson, AZ. 140 pp.
- Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.